How do I replace the strap?

Dear customer, hello, our products can replace the strap, just unscrew the screw at the connection between the strap and the dial. If you have any problems , please feel free to contact us via Amazon email, we will be at your service at any time.

What material is the bracelet made from? Is it genuine Leather？

Appears to be, but man made materials can be deceiving.

How do I adjust the date of my watch and how do I use the chronograph function?

There is a little trick: To set the time: 1. PULL crown to “3” position. 2. TURN crown either way to correct time. 3. PUSH crown into “1” position. DATE: To set the date: 1. PULL out crown to “2” position. 2. TURN crown clockwise to correct date. 3. PUSH in crown to “1” position. Note: The date changes automatically every 24hours. Standard stopwatch measurement: 1. PRESS pusher “A” to starttiming. 2. PRESS pusher “A” to stop timing. 3. PRESS pusher “B” to reset.